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2018-03-28Merge branch 'sverker/driver-taints/OTP-14960'Sverker Eriksson
* sverker/driver-taints/OTP-14960: erts: Include foreign static linked drivers in taints erts: Fix harmless bug in macro IS_DRIVER_VERSION_GE erts: Remove our own NIF modules from "taints" erts: Refactor erts_static_nif_get_nif_init erts: Add dynamic loaded drivers to list of "taints"
2018-03-27Merge branch 'john/erts/bwt-wt-dirty-schedulers/OTP-14959'John Högberg
* john/erts/bwt-wt-dirty-schedulers/OTP-14959: Add +sbwt/+swt analogues for dirty schedulers
2018-03-27Merge branch 'dgud/testcase-fixes'Dan Gudmundsson
* dgud/testcase-fixes: debug info add unicode opt env may contain unicode signs Fix lexemes conversion
2018-03-27Merge pull request #1760 from ↵John Högberg
jhogberg/john/erts/any-term-as-seq_trace-label/OTP-14899 Lift the type restrictions on seq_trace token labels
2018-03-26erts: Include foreign static linked drivers in taintsSverker Eriksson
That is, driver added with config option --enable-static-drivers.
2018-03-26erts: Fix harmless bug in macro IS_DRIVER_VERSION_GESverker Eriksson
harmless until we bump major version
2018-03-26Merge branch 'rickard/signals/OTP-14589'Rickard Green
* rickard/signals/OTP-14589: Fix VM probes compilation
2018-03-26Fix VM probes compilationRickard Green
2018-03-26Merge branch 'raimo/type-posix-0-overhaul/ERL_550/OTP-14019'Raimo Niskanen
* raimo/type-posix-0-overhaul/ERL_550/OTP-14019: Update types for posix error codes
2018-03-26Add +sbwt/+swt analogues for dirty schedulersJohn Högberg
Sharing these settings for all schedulers can degrade performance, so it makes sense to be able to configure them separately. This also changes the default busy-wait time to "short" for both kinds of dirty schedulers.
2018-03-26Update types for posix error codesRaimo Niskanen
I have read the man pages for most socket and file operations on recent Linux, FreeBSD, OpenBSD and Solaris 10 and noted the possible error codes. Which error codes that are possible for file operations have been updated in file:posix/0. Error codes for socket operations in inet:posix/0. The latter refers to the former so it is a superset, assuming that e.g sendfile and AF_UNIX socket operations could cause socket operations to return any file error code. That is not entirely true, but could be, especially in the future. Added to file:posix/0 are: ebadmsg edeadlk edeadlock eftype emultihop enobufs enolck enolink enosr enostr enosys eopnotsupp eoverflow erange etxtbsy Added to inet:posix/0 are all but: exbadport exbadseq file:posix() These are still possible according to erl_posix_str.c, but are not in file:posix/0 nor in inet:posix/0, and many of them are not file nor inet related, but some might be: e2big eadv ealign ebade ebadfd ebadr ebadrpc ebadrqc ebadslt ebfont echild echrng ecomm edirty edom edotdot eduppkg eidrm einit eisnam elbin el2hlt el2nsync el3hlt el3rst elibacc elibbad elibexec elibmax elibscn elnrng enavail enet enoano enocsi enodata enoexec enonet enosym enotempty enotnam enotuniq eproclim eprocunavail eprogmismatch eprogunavail erefused eremchg eremdev eremote eremoteio eremoterelease erpcmismatch erremote eshutdown esrmnt esuccesss etime etoomanyrefs euclean eunatch eusers eversion exfull sysnotready vernotsupported ediscon enomore ecancelled einvalidproctable einvalidprovider eproviderfailedinit syscallfailure service_not_found type_not_found e_no_more e_cancelled unknown
2018-03-23Merge branch 'rickard/signals/OTP-14589'Rickard Green
* rickard/signals/OTP-14589: Fix VM probes compilation Fix lock counting Fix signal order for is_process_alive Fix signal handling priority elevation
2018-03-23Fix VM probes compilationJohn Högberg
2018-03-23Lift the type restrictions on seq_trace token labelsJohn Högberg
OTP-14899
2018-03-23Correct overflow in ERTS_SINT64_MIN and add macros for 16/32John Högberg
This also removes a redundant #ifdef soup that had hidden the problem on most platforms.
2018-03-23Merge branch 'john/erts/async-thread-defaults/OTP-14928'John Högberg
* john/erts/async-thread-defaults/OTP-14928: Change default async thread count to 1
2018-03-23Merge branch 'john/erts/nif-map-from-array/OTP-14954'John Högberg
* john/erts/nif-map-from-array/OTP-14954: Add enif_make_map_from_arrays
2018-03-23Merge branch 'john/erts/list-installed-nifs/OTP-14965'John Högberg
* john/erts/list-installed-nifs/OTP-14965: Add an option to ?MODULE:module_info/1 for listing NIFs Fix a misleading comment
2018-03-23Add enif_make_map_from_arraysJohn Högberg
2018-03-22Fix lock countingRickard Green
2018-03-22Merge branch 'sverker/enif-name-funcs/OTP-14994'Sverker Eriksson
2018-03-22erts: Improve NIF load incompatibility errorsSverker Eriksson
2018-03-22erts: Remove const from ErlNifResourceDown docSverker Eriksson
to conform with erl_nif.h
2018-03-22erts: Add statement about errno to enif_*printf docsSverker Eriksson
2018-03-22erts: Add enif_vfprintf and enif_vsnprintfSverker Eriksson
2018-03-22erts: Add enif_*_name functionsSverker Eriksson
2018-03-22Fix signal order for is_process_aliveRickard Green
2018-03-22Fix signal handling priority elevationRickard Green
2018-03-22Merge branch 'bjorn/erts/eliminate-get_stacktrace'Björn Gustavsson
* bjorn/erts/eliminate-get_stacktrace: Eliminate use of erlang:get_stacktrace/0 in preloaded modules
2018-03-21Merge branch 'sverker/inline-sys_memcpy' againSverker Eriksson
* sverker/inline-sys_memcpy: erts: Fix some zero size sys_memcpy
2018-03-21Add an option to ?MODULE:module_info/1 for listing NIFsJohn Högberg
2018-03-21Merge pull request #1740 from rickard-green/rickard/signals/OTP-14589Rickard Green
Implementation of true asynchronous signaling between processes
2018-03-21Change default async thread count to 1John Högberg
All uses of async threads in the built-in drivers have been replaced with dirty IO, so it no longer makes sense to leave the default at 10.
2018-03-21Implementation of true asynchronous signaling between processesRickard Green
Communication between Erlang processes has conceptually always been performed through asynchronous signaling. The runtime system implementation has however previously preformed most operation synchronously. In a system with only one true thread of execution, this is not problematic (often the opposite). In a system with multiple threads of execution (as current runtime system implementation with SMP support) it becomes problematic. This since it often involves locking of structures when updating them which in turn cause resource contention. Utilizing true asynchronous communication often avoids these resource contention issues. The case that triggered this change was contention on the link lock due to frequent updates of the monitor trees during communication with a frequently used server. The signal order delivery guarantees of the language makes it hard to change the implementation of only some signals to use true asynchronous signaling. Therefore the implementations of (almost) all signals have been changed. Currently the following signals have been implemented as true asynchronous signals: - Message signals - Exit signals - Monitor signals - Demonitor signals - Monitor triggered signals (DOWN, CHANGE, etc) - Link signals - Unlink signals - Group leader signals All of the above already defined as asynchronous signals in the language. The implementation of messages signals was quite asynchronous to begin with, but had quite strict delivery constraints due to the ordering guarantees of signals between a pair of processes. The previously used message queue partitioned into two halves has been replaced by a more general signal queue partitioned into three parts that service all kinds of signals. More details regarding the signal queue can be found in comments in the erl_proc_sig_queue.h file. The monitor and link implementations have also been completely replaced in order to fit the new asynchronous signaling implementation as good as possible. More details regarding the new monitor and link implementations can be found in the erl_monitor_link.h file.
2018-03-21Fix a misleading commentJohn Högberg
2018-03-21Eliminate use of erlang:get_stacktrace/0 in preloaded modulesBjörn Gustavsson
2018-03-21Merge branch 'bjorn/misc-beam-fixes'Björn Gustavsson
* bjorn/misc-beam-fixes: Correctly handle get_map_elements with a literal map core_parse: Fix handling of negative sizes in binaries
2018-03-20erts: Remove our own NIF modules from "taints"Sverker Eriksson
Dynamic NIF libs and those added with config option --enable-static-nifs are considered as taints.
2018-03-20erts: Refactor erts_static_nif_get_nif_initSverker Eriksson
to return pointer to ErtsStaticNifEntry.
2018-03-20erts: Add dynamic loaded drivers to list of "taints"Sverker Eriksson
2018-03-20erts: Fix some zero size sys_memcpySverker Eriksson
2018-03-20Merge branch 'sverker/inline-sys_memcpy'Sverker Eriksson
* sverker/inline-sys_memcpy: erts: Optimize macro DMC_PUSH erts: Make sys_memcpy and friends inline functions
2018-03-20erts: Optimize macro DMC_PUSHSverker Eriksson
to call a common static function dmc_stack_grow() and reduce the code bloat. and did a combined DMC_PUSH2
2018-03-20erts: Make sys_memcpy and friends inline functionsSverker Eriksson
to avoid argument-evaluated-twice bugs like in macro DMC_PUSH. Had to shuffle around some #include and #define to make erl_child_setup build debug target.
2018-03-20Merge branch 'john/erts/fix-set-owner-group/ERL-589'John Högberg
* john/erts/fix-set-owner-group/ERL-589: Fix file:change_group/change_owner
2018-03-19Correctly handle get_map_elements with a literal mapBjörn Gustavsson
A get_map_elements instruction that has a literal map operand would never be translated to a i_get_map_element instruction. That would be a problem for the following instruction: get_map_elements Fail #{} {x,0}, {x,1} Since the key is not a literal, get_map_element must be used, since get_map_elements requires that a hash value can be calculated for each element. When the instruction is translated to i_get_map_element, the hash value will be set to 0 and an assertion will trigger in the debug build.
2018-03-19Fix file:change_group/change_ownerJohn Högberg
It wasn't possible to change group/owner separately, and our test suite lacked coverage for that. ERL-589
2018-03-16mikpe/process_info-1-no-messages/PR-1745/OTP-14986Lukas Larsson
make erlang:process_info/1 not retrieve messages
2018-03-16Merge pull request #1746 from legoscia/erl_nif.xml-spellingLukas Larsson
Fix typos in erl_nif.xml
2018-03-15Tracing MatchSpec docs updateVladimir Gordeev
I was running this code in shell and expected it to take default `self()` meta tracer, and start tracing `erlang:put/2`. ``` F = fun F() -> timer:sleep(5000), erlang:get(unique_field), erlang:put(unique_field, 123), F() end. erlang:trace_pattern({erlang, put, 2}, [{['$1', '_'], [{'==', '$1', unique_field}], []}], [global]). erlang:trace_pattern({erlang, get, 1}, [{['_'], [], [{trace, [], [call, timestamp]}]}], [meta]). Pid = spawn(F). ``` But tracing didn't start: ``` 6> flush(). Shell got {trace_ts,<0.70.0>,call, {erlang,get,[unique_field]}, {1521,118606,753838}} Shell got {trace_ts,<0.70.0>,call, {erlang,get,[unique_field]}, {1521,118611,754798}} Shell got {trace_ts,<0.70.0>,call, {erlang,get,[unique_field]}, {1521,118616,755705}} ok 7> erlang:trace_info(Pid, flags). {flags,[]} ``` Turns out that I had false expectations, that `{trace, _, _}` would enable tracing on that process, inheriting meta tracer process as consumer of trace messages. Instead it tried to take tracer from executing process (which is pointed out in docs). But there was none, so no tracing was started and flags were simply ignored (which is not that obvious from docs). Updated docs to point out that there are cases when flags would be simply ignored, and no tracing would start.